| 低电压全BJT高阶对数滤波器设计 |
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| 引用本文： | 张玲,曾以成,杨红姣.低电压全BJT高阶对数滤波器设计[J].微电子学,2009,39(3). |
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| 作者姓名： | 张玲 曾以成 杨红姣 |
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| 作者单位： | 湘潭大学,光电工程系,智能光电技术研究所,湖南,湘潭,411105 |
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| 摘 要： | 提出了一种1.2 V低电源电压全BJT任意阶低通对数滤波器的设计方法.该方法是由传输函数直接设计低通对数域滤波器,得到最优的BJT跨导线性单元和滤波器系统状态空间后,利用最优状态空间描述滤波器系统,对微分方程中的每一项,使用最优BJT跨导线性单元设计其对应的电路,进行组合,从而得到低通对数滤波器,实现了不同阶数、不同纹波的切比雪夫低通滤波器,理论分析和Pspice实例仿真表明,该方法能最优地实现所需电路的设计,具有电路简洁和低电压的特点.
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| 关 键 词： | 对数域滤波器 跨导线性单元 传输函数 状态空间 |
Design of Low-Voltage Higher-Order Current-Mode Log-Domain Filter Based on BJT |
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| ZHANG Ling,ZENG Yicheng,YANG Hongjiao.Design of Low-Voltage Higher-Order Current-Mode Log-Domain Filter Based on BJT[J].Microelectronics,2009,39(3). |
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| Authors: | ZHANG Ling ZENG Yicheng YANG Hongjiao |
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| Affiliation: | Dept.of Photoelec.Engineer.;Institute of Intelligent Photoelectric Technology;Xiangtan Univ.;Xiangtan;Hunan 411105;P.R.China |
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| Abstract: | A 1.2 V low-voltage nth-order low-pass log-domain filter based on BJT was proposed.The low-pass log-domain filter was derived from transfer function.The filter system was described by using optimal state-space after the best BJT translinear cell and state-space of the filter system were obtained.Each item,whose corresponding circuit was designed using the best BJT translinear cell,in differential equation was combined,to achieve low-pass log-domain filter.Chebyshev low-pass filters with different orders and... |
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| Keywords: | BJT |
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